Rolling-mill



4 Sheets-Sheet 1- J. F. SANDBERG. ROLLING MILL.

No.25Z,523. Patented Jan.17,1882

4 Sheets-Sheet 2.

J. P. SANDBERG.

ROLLING MILL.

Patented Jan. 17,1882.

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J. F. SANDBERG.

ROLLING MILL.

120,252,523. PatentedJan.17,l882.

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4 Sheets-Sheet 4. J, P.v SANDBERG.

ROLLING MILL. 1%. 252.523. Patented Jan. 17,1882.

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UNITED STATES PATENT OFFICE.

JOSEPH F. SANDBERG, OF NEW YORK, N. Y., ASSIGNOR OF ONE'THIRD TO CARL ISRAEL QVARNSTRGM, OF DONOVAN, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 252,523, dated January 17, 1882.

Application filed December 30,1879.

To all whom it may concern: i

Be it known that I, JOSEPH FERDINAND. SANDIBERG, of New York, in the county of New York and State of New York, have invented 5 a new and useful Improved Rolling-Mill, of

which the following is a specification.

The object of this invention is to furnish rollin gvmills so constructed that a bar may be rolled and reduced to any desired thickness and to width by the use of only two pairs of smooth 7 rollers, thereby greatly economizing space, or-

pense, attendants, and machinery, as compared with rolling-mills heretofore in use.

My invention consists in certain improve- 15 ments in the arrangement and construction of the parts in that class of rolling-mills in which two pairs of rollers are employed, as hereinafter more fully set forth, and pointed out in the claims.

20 In the accompanying drawings, Figure 1,

' Sheet 1, is a front elevation of my improvement. Fig. 2, Sheet 2, is a sectional side elevation taken through the line as m of Fig. 1. .Fig. 3, Sheet 3, is a sectional plan view taken 2 5. through the line 3 y of Fig. 1. Fig. 4, Sheet at, is a plan view of the adjusting-gearing. Fig.

5, Sheet 4, is a sectional view taken through the line 2 z of Fig. 1. Fig. 6,Sheet 4, is a section'al view taken through the line 1: a of Fig l.

- 0 Fig. 7, Sheet i, isa sectional view taken through the line to w of Fig. 1.' Fig.8, Sheet 4. is a sectional view taken through the line a a of Fig. 3. Fig. 9, Sheet 4, is a detail view, partly in section, of the bevel-gear wheels and their clutch.

Similar letters of reference indicate like parts.

A represents the frame ofthe machine.

B are the. main or horizontal rolls, the journals ot'which revolve in adjustable bear- 0 ings in the frame A, and which are connected to receive rotary motion from water or steam power, as usual.

D E are two upright rolls placed a little in front of the horizontal rolls B O. The journals A 45 of the rolls D E work in bearings F, where they are secured against longitudinal movement by collars and set-screws attached to the upper journals,above and below the said bearings, as shown in Figs. 1 and 2. In the front and rear parts of the bearings F are formcd'holes to receive the rods G, the ends of which are attached to the frame A, so that the bearings F, p and with them the rolls D E, may be adjusted farther apart or closer together, as required. The bearin gs F, when adjusted, may be secured in place upon the rods G by set-screws, as shown in Figs. 1 and 2.

To the lower journals of the rolls D Eare attached bevel-gear wheels H, the teeth of which mesh into the teeth of the bevel-gear wheels I, whose hubs revolve in bearings J, which are connected with the lower bearings, F, by pairs of rods or bolts K, to give firmness to the said bearings F J. The hubs ofthe bevel-gear wheels I are bored to fit upon the counter-shaft L, and the boresof the hubs are grooved to fit upon a feather orspline, l, secured longitudinally upon said shaft, so that the gear-wheels I may slide upon the shaft L, but will be carried with it in its revolution. The shaft L revolves in bearings in the frame A, and upon it, at the outer side of the frame A, is placed a gear-wheel, M, the teeth of which mesh into the teeth of the gear-wheel N, attached to the journal of the roll B, so that the rolls D E may be driven by tlie same power which drives the rolls B G. The gear-wheel M is connected with the shaft L by a conical friction clutch,O, which is connected with the shaft L by a spline or other suitable means, and is held against the gear-wheel M by lock-nuts P, placed upon a screw-thread out upon the projecting part of the shaft L. The gear-wheel M. is provided withtwo concentric grooves,a a, with a cii cular flange, b, between them, which projects into a circular groove, 0, in the clutch O, as seen in Fig. ii, to interlock with each other and make the connection firmer. The projecting outer end of the shaft L revolves in a bearing-Q, attached to a standard or olhersupport, It, so that the said shaft may be firmly supported against the strain of the gear-wheels M N.

The bearings of the upper roll, 0, are each provided with a block, (I, (see Fig. 2,) resting on thetop of its bearing, and provided with a 5 circular cavity, which receives one of the rounded ends of two screws, S, which passthrongh screw-holes in the top bars of the frame A. 1

The upper parts of the screws S pass through bearings in a flanged bar, T, the flanges of which have holes formed through them to receive the rods U, which pass through the top bars of the frame A, and are attached to the bearings of the upper roll, 0. Upon the rods U are placed spiral springs V, upon which the flanges of the barTrest,and which are made of sufficient strength to press the flanges of the bar T up against the nuts 011 the upper ends of the rods U, and to assist in raising the bearings of the top roll,G, when the screws S areturned up and to hold the flanged barT from rocking, while allowing it to move up and down as the screws S are turned up and down. The springs Vare assisted in raising the bearings of the top roll, 0, by springs V, interposed between the bearings of the two rolls B O, as shown in Fig. 2. To the upper ends of the screws S are attached gear-wheels W, the teeth of which mesh into the teeth of the intermediate gear-wheel, X, journaled in the flanged bar T, so that the wheels W may turn together and in the same direction when poweris applied to one of them. The teeth of one of the gear-wheels W mesh into the teeth of a small gear-wheel, Y, attached to the upper end of a vertical shaft, Z, the upper part of which revolves in a bearing in the end of the flanged bar T. The lower part ofthe shaft Z revolves in a bearing in the end of an arm or bracket, A, attached to the frame A.

To the lower end of the shaft Z is attached a small bevel-gear wheel, B, the teeth of which mesh into the teeth of two small bevel-gear wheels, 0, which run loose upon the project ing end of the journal of the upper roll, 0.

Upon thejournal of the roll 0, between the gear-wheels O, is placed a double clutch, D, which is splincd to the journal of the roll 0, so that it may be carried around by and with the said roll in its revolution, and may be slid upon the said journal to throwit into gear with either of thegear-wheelsO,as may be required. With this construction the screws S may be run up and down by the revolution of the roll 0 by throwing the clutch Dinto gear with one or the other of the gear wheels 0. The double clutch D has a groove formed around its middle part to receive a band, E, which has pins attached to its upper and lower sides to "receive the notched ends of the prongs of the forked lever F, which is pivoted to an arm or bracket, G, attached to the frame A, so that the clutch D can be readily adjusted as required by oscillating the leverF upon its fulcrum.

To the upper end of one of the screws S is attached a bar, H, by a screw, 1, which-has cross-ribs formed upon its lower side to rest upon the upper side of the gear-wheel W. The end of the bar H projects to form a pointer, d. J represents an arm attached to the flanged bar T and projecting above the pointer d. In raising or lowering the roll 0, by means of the feed-screws S, operated by the gears W X Y clutch is thrown out of gear; or the pointer may be set at one-half or one-quarter of. the circumference of the wheel W, or at any desired distance from the arm J, the double clutch D being in gear, when the roll will be raised or lowered and the clutch thrown out of gear by the operator when the pointercomes opposite the arm J, thus raising or lowering the roll 0 any desired distance. I

To raise or lower the roll 0 a distance corresponding to the thickness to which the bar is intended .to be compressed at any one passage through the mill, it is only necessary to throw the clutch D in contact with one or the other of the respective wheels 0, which will then transmit the motion of the roll 0, by the wheel B, shaft Z, and wheel Y, to the wheels W, and turn the screws S up or down a distance equal to the pitch of said screws for each revolution of the wheels Wthat is to say, for each time the pointer 41 passes the stationary arm J. One-fourth of a turn of the index H represents likewise a difference in elevation of one-fourth of the pitch, and the latter being known, the distance between the rolls B and O can thus be rapidly adjusted to a nicety.

To the shaft Z is attached a hand-wheel, K, for adjusting the rolls B O by-hand, if required, in which case the double clutch I) is moved into a central position between the bevelwheels 0, out of contact with either ofthem.

To the bearings F F J of roll E are swiveled the ends of the three screws L, the middle one of which is threaded in opposite direction to the upper and lower ones, for a purpose hereinafter described, and which pass out through holes in the frame A, and fit into screw-threads in the hubs of the bevel-gear wheels ll' To the hub of the upper gear-wheel M is attached the end of a sleeve, N, to the outer end of which is attached a hand-wheel, O.

In bearings P, attached to the projecting ends of the rods G, or to other supports attached to the frame A, revolve'the ends of two vertical shafts, Q, to the end parts of which are attached bevel-gear wheels R. The shafts Q are placed in line with each other, and the teeth of the bevel-gear wheels R mesh into the teeth of the bevel-gear wheels M. By this construction, by turning the hand-wheel 0 the bevelgear wheels M will be turned together to adjust the vertical rollers D E and their gear-wheels H I at'a greater or less distance apart, as may be desired. It will be perceived that the hand-wheel O and the upper and lower bevel'gears M in the construction described turn in the same direction, and that IIS the central or middle gear M turns in an opposite direction, and hence the central screw L must be threaded in an opposite direction to the threads on the upper and lower screws L to effect the adjustment of the rollers D E.

necessity of using several pairs of rolls with heretofore.

circumferential grooves of various sizes, as The lateral pressure of the bar operated upon against the vertical roll D and its bearings F is taken up by the stop-screws L passing through the frame A opposite to the screws L, in axial line with the latter. By unscrewing the screws L more or less and turning the screws Lforward an equal distance the rolls D E may both be moved op-' posite a yet unworn portion of the surface of the rolls B 0, thus making the rolls last for a much longer time without replacing them or.

. renewing them by turning.

S isa guide placed upon rods T, attached to the frame A, for convenience in guiding the barsinto proper position between the rolls B 0 when inserting them. The guide S may be secured to the rods T adjustably by set-screws or other suitable means, if desired. A'second guide, S may be secured to the end parts of the rods T for guiding the bars between the end parts of the rolls B 0 when it is notdesired to have them pass betweenthe roll D E. In this case a plate or apron, U, may be placed upon the end parts of the rods G to receive the bars as they come out from between the rolls B G.

V represents a bar journaled in the sides of the frame, to which is secured a plate, W, projecting inwardly between the rollers B C.

To the bar V is secured a hand-lever, X, projecting outwardly, by means of 'which the bar V may be operated so as to cause the edge ofthe plate W to be raised and lowered. When a bar of iron is passed between the rollers B O the edge of the plate W is brought'to bear against it as it passes from between the rollers, to prevent it from winding around the upper roll, until the end of the bar is caught under the curved end of the bai; Z, which latter guides it upon the surfaces f between the side cleats, F These cleats, by contact with the vertical edges of the issuing bar, prevent it from bending laterally.

To the frame A are pivoted the ends of a square bar, Y, which carries the said curved arm Z for holding the bar down and preventingit from turning asit comes outfrom between the rolls B O to pass in the proper place and position between the rolls D E. The hub of the arm Z is fitted to slide .upon the bar Y, and is secured upon the latter by a set-screw, so that it may be adjusted to correspond with the adjustments of the rolls D E. To the pivoted bar Y is also secured in the same manner an upwardly-projecting arm, A through the upper end of which is threaded a screw, B which also passes through a slot in. an arm, (3 attached to the rod G, and through a slot in a plate or arm, D attached to the frame A, and is secured in any position in said slot by a jam-nut, D on one side of the plate D there being a washer, D, on the opposite side of the plate, as shown in Fig. 7, so that by loosening thejam-n-ut and turning the screw B the bar vY will be turned to raise or lower the curved arm Z, and when the latter is thus adjusted to correspond with the thickness of the bar being rolled the jam-nut is again tightened to keep the bar in position. i

E is a bracebar having its ends bent inward and bolted to the frame A, as shown, so that the body ofthe bar projects in front of the bearings F of the upright rolls D E, and serves as support to the rear end of the bar as it comes from the rolls.

To the adjacent forward corners of the bearings F are attached guide-blocksW, to receive the bar as it comes from the rolls D E and keep it from bending laterally, as before mentioned.

G is a strengtheniiig-clip passed around the rod G and clamped by end plate and nuts to the bar E and may be adjusted to serve as a stop for gaging the distance apart of the rolls 1) E:

. It is evident that by arranging the position of the rolls D E relative to that of the rolls B G at any other than a right angle, a bar may be rolled into a more or less acute diamond shape of cross-section. 1

.Havin g thus described my in ventiou, I claim as new and desire to secure by Letters Patent- 1. The combination, with the horizontal rolls B O and vertical rolls D E, of the rock-shaft V, plate W, lever X, and adjustable curved bar Z, substantially as described, and for the JOSEPH FERDINAND SANDBERG.

Witnesses:

- A. W. ALMQVIST,

U. SEnewIcK. 

